Scoot McNairy as Gordon Clark and Anna Chlumsky as Katie Herman in Halt and Catch Fire

Exactly three months after it was announced that five-time Emmy-nominated Veep star Anna Chlumsky would have a recurring role in the fourth and final season of AMC's Halt and Catch Fire, the actress' first appearance in the drama as Dr. Katie Herman will take place this Saturday, Sept. 9, in the "Tonya and Nancy" episode.

Chlumsky's character is a chief ontologist, and is described by AMC as playing "a crucial role in this season's Search business venture."